Date:	Tue, 06 May 1997 08:08:55 +1200
From:	Bill Currie <billc AT blackmagic DOT tait DOT co DOT nz>
Subject:	Re: Understanding Allegro...
To:	Gorman Ho <gorman AT gpu DOT srv DOT ualberta DOT ca>
Cc:	djgpp AT delorie DOT com
Reply-to:	billc AT blackmagic DOT tait DOT co DOT nz
Message-id:	<336E3E57.465B@blackmagic.tait.co.nz>
Organization:	Tait Electronics NZ
MIME-version:	1.0
References:	<01bc58dd$9a65a2a0$beee8081 AT default>

Gorman Ho wrote:
> 
> For some unknown reason, I have an urge to understand how various modules
> in Allegro work. I have begun by studying the allegro_init() and
> allegro_exit() functions. I understand most of it, but I have no idea what
> the CRTC register is. Could someone please explain this one to me?

Cathode Ray Tube Controller.  It contains most of the mode selection
registers (horizontal and vertical resolutions/timings, cursor location
graphics/text mode and numberous others).  Your best bet is to find a
VGA book or check out vgadoc (somewhere on simtel).

Bill
-- 
Leave others their otherness.

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